Home / 20,378.54-30,553.32-7,888.02

Finding the Fourth Proportional to 20,378.54, 30,553.32 and 7,888.02

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Solution

The fourth proportional to 20,378.54, 30,553.32 and 7,888.02 is: 11,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.54 : 30,553.32 = 7,888.02 : x
  2. Step 2: Convert to fraction form
    20,378.54/30,553.32 = 7,888.02/x
  3. Step 3: Cross multiply
    20,378.54x = 30,553.32 × 7,888.02
  4. Step 4: Simplify right side
    20,378.54x = 241,005,199.23
  5. Step 5: Solve for x
    x = 241,005,199.23/20,378.54
  6. Step 6: Final answer
    x = 11,826.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.